/*
 * Copyright (c) 2021 The StreamX Project
 * <p>
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.streamxhub.streamx.flink.kubernetes.watcher

import scala.language.implicitConversions

/**
 * auth: Al-assad
 */
trait FlinkWatcher extends AutoCloseable {

  /**
   * Start watcher process.
   * This method should be a thread-safe implementation of
   * light locking and can be called idempotently.
   */
  def start(): Unit

  /**
   * Stop watcher process.
   * This method should be a thread-safe implementation of
   * light locking and can be called idempotently.
   */
  def stop(): Unit

  /**
   * This method should be a thread-safe implementation of
   * light locking and can be called idempotently.
   */
  def restart(): Unit = {
    stop()
    start()
  }

  /**
   * Runnable streamline syntax
   */
  protected implicit def funcToRunnable(fun: () => Unit): Runnable = new Runnable() {
    def run(): Unit = fun()
  }

}
